Cardiac output changes in newborns with hyperbilirubinemia treated with phototherapy.

Abstract:

:Phototherapy is known to increase peripheral blood flow in neonates, but information on the associated cardiovascular effects is not available. Using pulsed Doppler echocardiography we evaluated cardiac output and stroke volume in 12 preterm and 13 term neonates during and after phototherapy. We concomitantly measured arterial limb blood flow by strain gauge plethysmography and skin blood flow by photoplethysmography. Cardiac output decreased by 6% due to reduced stroke volume during phototherapy, whereas total limb blood flow and skin blood flow increased by 38% and 41%, respectively. Peripheral blood flow increments tended to be higher in the preterm than in the term infants. The reduced stroke volume during phototherapy may be an expression of reduced activity of the newborn during phototherapy. For healthy neonates the reduction in cardiac output is minimal, but for sick infants with reduced cardiac output, this reduction may further aggravate the decrease in tissue perfusion.

journal_name

Pediatrics

journal_title

Pediatrics

authors

Walther FJ,Wu PY,Siassi B

subject

Has Abstract

pub_date

1985-12-01 00:00:00

pages

918-21

issue

6

eissn

0031-4005

issn

1098-4275

journal_volume

76

pub_type

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